Power management

I was recently testing the FOD reping behavior and noticed that when FOD is detected and FOD reping is enabled, the TX retry delay is fairly short (a few seconds).Are there any settings to increase this time delay?If a foreign object keeps getting detected, does the TX eventually increase the reping delay time? It seems that with this short of a delay the foreign object could still heat up as the charger still transfers power every few seconds. 

I am using SPI to control L6482 and then control the stepper motor, but I don't know the complete control process. Can you provide me with a reference configuration? 我在使用SPI控制L6482进而控制步进电机，但我不知道完整的控制流程该是怎样的，你们能否给我一份相关的参考配置？

Can you help to explain the function of these GPIO settings on the RX IC?0x0A - RX power Out OD - this function is not mentioned in the datasheet or EVK user guide but is available through the GUI. How does it work?0x05 - what does FW ready indicate? Is it related to Vout turn on? Is this a Push Pull or Open Drain pin?0x29 and 0x2A - What is the function here? Does this pin act based on any information on the IC, or does it just stay high/low?

We are looking into wireless chips from ST, but all pages related to wireless charging seem to be gone!For instance, the chip can be found on the store still:https://estore.st.com/en/products/power-management/wireless-charger-ics.htmlBut the datasheet can't be downloaded for any of them.This page: https://www.st.com/en/power-managementhas a `Wireless Charger ICs` link that doesn't workThis page: https://www.st.com/en/embedded-software/wireless-charging-software.htmlhas a "Supported devices" section with dead links.Is something going on or is there just a massive bug on ST's webs

Hi,   Due to my mistake, when using the GUI tool to update the firmware, I mistakenly loaded the configuration file into both the PATCH and CONFIG sections. As a result, the chip is not functioning properly and cannot connect to the GUI tool. Is there any way to recover and reconnect to the GUI tool and update the firmware again?

Hi Team, We have used a Thyristor for our 24v input protection and conducted lab tests for 24v inputs by feeding upto 2kv surge. When the device is tested with normal regulated power supply or SMPS. The device is ok but when it is deployed in field the Thyristors are getting short. What could be the reason. Kindly help us to resolve. Part Number: SMP100LC-35 For every 1000 lot we are getting back atleast 20 device back to the factory. Please let me know if you need any other clarification or details. Thanks Srinivas

TwisterSIM is provided for free, but you need to get approval to use the full version.Is it illegal to continue using it as a trial version without approval?

At about 6.3A load the VN7050 switches off the output, which is much lower than I expected given the limit ratings in the datasheet, I suspect my thermal via's are not sufficient and that it is reaching an overtemperature condition, so have made changes to the board design to address this.My concern is that this may not be the issue, or at least the only issue, because when it switches off the output the voltage drops to about 20mA, as expected, but the IC continues heating to about 100C and only starts to cool when the load current is reduced to below about 260mA, at which point the output switches on again and the IC rapidly cools.Any suggestions on what may be happening here would be appreciated. 

Hi ! I'm using the VNHD7008AY, 24V powered, to drive a brushed DC motor, 3A. It works fine, but sometimes the VNHD7008AY burns. I think that the chip has a self protection, but it seams that it doesn't work or I'm doing something wrong. The problem happen using a 24V 3A power supply. Why the chip burn at a so low current ? I follow the application note, the main difference are the mosfet, I'm using three PSMN021-100YL instead of the STL120N4F6AG and STL76DN4LF7AG. 

Please review and advise what is MSL(Moisture Sensitivity Level) of part#STP85N3LH5. We are aware that this part is "obsolete".Please provide a related link /document showing the MSL of this part.

Hi! I'm new in this forum, and my english is not the best, but I will try to explain myself.  I'm charging Lead-Acid batteries with a transformer, and a bridge rectifier. If there was no battery, the signal will be a pulsating signal, but because the battery has a internal resistance, and ESR, it's quite flatted ( if it's looked in an oscilloscope, you see a DC voltage, with the upper part of the pulsating signal wich is greater than the battery voltage ). Currently, I have a voltage divider, with some 0.1% tolerance resistors. Is there a better way to do this? In the code, the ADC input is filtered with an equivalent of a RC low pass filter ( Input signal 50hz ), and then with an average code. Again, is there a better way to make this? Finally, I have to detect when the battery reaches a setpoint voltage, this is easy, but I also have to detect when the battery is disconnected, may seem simple, but when the battery is disconnected, the transformer has no load, and the m

Dear support team, can I run both outputs of the VND5004ATR-E parallel to decrease the RDSon even more? So just connect both inputs and the load on both outputs? Thanks

Dear STM Team,Please answer to my below queries:1. Can you please let me know the maximum frequency can be provided to IPS1025HTR-32 and VN750PSTR-E to enable or drive high side switch?2. Can we drive these switches at lower duty cycle up to 1%? Regards,Prakat 

Hey ST community!I am trying to download the GUI for the STEVAL-L99615C from this LINKBut when I try to unzip this folder I get an error saying that the file is invalid. Is this happening to anyone else?Thanks for any help!

Good morning sir Pls identify the component.i don't understand 

Hi everyone,I’m designing a 3-phase SMPS using the VIPER22A and need some assistance with the transformer design. Below are the key design parameters:Design Parameters:Input Voltage: 150 VAC to 420 VAC (50 Hz)Output Voltage: 5.5 V DC, 2 APower Output: 10 W to 11 WFrequency: 60 kHzDuty Cycle: 50%Efficiency: 80%VIPER22A: Internal MOSFET requires external StackFET for protection due to high input voltage.Questions:Transformer Winding Ratio: How do I calculate the winding ratio for primary and secondary windings for this design?Wire Gauge: What wire gauge should I use for the primary, seco

Hello ST Microelectronics Community, i need your Help. Which Part Marking has LD1117DT33CTR TO-252-3, DPAK ? Yours sincerly Badis Gara

What is the recommended RLIM value for Vout of 28V and Iout of 60mA?

Im planning to use the LDO LD39015M12R with 1.8V Vin, VOut=1.2V 5mA load current. the drop out voltage is 80mV but the datasheet shows the condition of Vin= Vout+1v in the  electrical characteristics table.My case will not meet this Vin=Vout+1V condition, will it be a problem or the LDO will work as the drop out voltage is met.Please share your though as soon as possible team. 

Dear Community,using the STEVAL-ILL089V1 board we would like to power a string of 12 LEDs (Cree XLamp Element G LED Data sheet) and use the PWM dimming function. While the respective raising and falling DIM treshold voltages are clearly stated in the ALED6000 datasheet, I am not sure about the practicable PWM input frequency and resolution. As I am not that experienced in the electronics field yet, I would highly appreciate if you could give me recommendations for the PWM input frequency and practicable resolution (minimal increment / step size).Thanks in advance and best regards,Ingmar 

Hello,I would like top know if twop LDL212DR regulators can be used in parallel as below. Do you recommend a power pad if I have a 12V ionput and a 6V 150mA output?best regards

Posted on March 23, 2017 at 12:31I tried to connect the EVAL-STPM32 board to the STPM3x Evaluation Software but encountered the following error when trying to read data.Error message: 'Read buffer length insufficient. The operation has timed out.'PC was running Windows 7 STPM3x Evaluation Software v3.1.0.0In the 'Options -> Interface' menu, the following values were used:UART / COM 5 / 9600 (baud rate)The board was connected to the PC through a USB to UART Bridge (Silicon Labs CP210x).J2 connected to the USB-to-UART bridgeJ7 connected to an external DC supply of 3.3VJ2 connected to a different 3.3V sourceJ3 jumper was removedSWC1 DIP switch was all in on positionJ4 jumper was in 'enable' positionI really appreciate your help.#stpm3x

The description of the on and off pins is not complete. What happens if both are active at the same time? Does one pin have higher priority than the other? Is it possible to turn the device on/off just using one of the pins letting the other one unconnected? Is the signal latched (after debounce time)?  

Hola, ¿Me podéis ayudar con mi problema? Cuando conecto la realimentación del optoacoplador a RFmax el transformador hace ruido, se regula correctamente la tensión pero el transformador hace ruido. He variado los valores de Rfmin y Rfmax, también los valores de los elementos ISEN_HB pero no tengo ninguna mejora. Translated to English Hello, can you help me with my problem? When I connect the feedback of the optocoupler to RFmax the transformer makes noise, the voltage is correctly regulated but the transformer makes noise. I have varied the values of Rfmin and Rfmax, also the values of the ISEN_HB elements but I do not have any improvement.

Is it possible to start either of these Vipers up earlier than their stated HV startup voltage by sourcing VCC manually (external supply) from the Vin voltage?